Oh yes I can.
At 0:09 they bring him down. He is lying on his side when they start to pin him. One cop blatantly kneels on the guy's legs while another cop grabs his head and a third takes his arms & torso.
From 1:13 onwards you have a clear view of his feet, which are definitely pointed down, proving that his entire body is now facing the ground (look for the heels of his shoes, which are positioned higher than the toes). He is now completely incapacitated by four cops, one of whom is sitting on his legs and straddling them.
You can also see that the flag pole the guy was carrying has now been used to immobilise his legs; it is either threaded between them or simply laid across the back of them. Either way, it is being pressed heavily against his legs by the cop who is sitting on him.
At 1:18 the cop on his right starts to hit him with the baton.
At 1:21 the cop sitting on his legs punches him a couple of times while the cop on his right continues to beat him with the baton. You can clearly see between the legs of the cop with the baton, and from that angle it is very evident that the guy's head is being struck - not his arm, which has been pinned.
Do me a screen shot of the point where you can clearly see how he is lying and what part of him was hit.
Watch the video. Pause at the relevant points.
There is not one single point at which the guy is able to retaliate. He is completely and utterly helpless. On a related note, are these guys even cops? I can't make out the writing on their jackets.